package c3.Example07;
class  Student {
    private String name;
    private int age;
    public  Student() { }
    public  Student (String n){
        name = n;
    }
    public Student ( String n, int a){
        name = n;
        age = a;
    }
    public void read(){
        System.out.println("我是"+name+",年龄"+age);
    }
}
public class Example07 {
    public static void main(String[] args) {
        Student stu1 =new Student("张三");
        Student stu2 =new Student("张三",18);
        stu1.read();
        stu2.read();
    }
}
